SIA8A_BOVIN
ID SIA8A_BOVIN Reviewed; 356 AA.
AC Q6ZXD2;
DT 25-JUL-2006, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 83.
DE RecName: Full=Alpha-N-acetylneuraminide alpha-2,8-sialyltransferase;
DE EC=2.4.99.8 {ECO:0000250|UniProtKB:Q92185};
DE AltName: Full=Alpha-2,8-sialyltransferase 8A;
DE AltName: Full=Ganglioside GD3 synthase;
DE AltName: Full=Ganglioside GT3 synthase;
DE AltName: Full=Sialyltransferase 8A;
DE Short=SIAT8-A;
DE AltName: Full=Sialyltransferase St8Sia I;
DE Short=ST8SiaI;
GN Name=ST8SIA1; Synonyms=SIAT8A;
OS Bos taurus (Bovine).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC Bovinae; Bos.
OX NCBI_TaxID=9913;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=15843597; DOI=10.1093/glycob/cwi063;
RA Harduin-Lepers A., Mollicone R., Delannoy P., Oriol R.;
RT "The animal sialyltransferases and sialyltransferase-related genes: a
RT phylogenetic approach.";
RL Glycobiology 15:805-817(2005).
CC -!- FUNCTION: Catalyzes the addition of sialic acid in alpha 2,8-linkage to
CC the sialic acid moiety of the ganglioside GM3 to form ganglioside GD3;
CC gangliosides are a subfamily of complex glycosphinglolipds that contain
CC one or more residues of sialic acid (By similarity). Can catalyze the
CC addition of a second alpha-2,8- sialic acid to GD3 to form GT3 (By
CC similarity). Can use GM1b, GD1a and GT1b as acceptor substrates to
CC synthesize GD1c, GT1a and GQ1b respectively (By similarity).
CC {ECO:0000250|UniProtKB:Q92185}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl
CC derivative + CMP-N-acetyl-beta-neuraminate = an N-acetyl-alpha-
CC neuraminyl-(2->8)-N-acetyl-alpha-neuraminyl-(2->3)-beta-D-galactosyl
CC derivative + CMP + H(+); Xref=Rhea:RHEA:19313, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:57812, ChEBI:CHEBI:60377, ChEBI:CHEBI:140308,
CC ChEBI:CHEBI:140309; EC=2.4.99.8;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CMP-N-acetyl-beta-neuraminate + ganglioside GM3 (d18:1(4E)) =
CC CMP + ganglioside GD3 (d18:1(4E)) + H(+); Xref=Rhea:RHEA:41760,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57812, ChEBI:CHEBI:60065,
CC ChEBI:CHEBI:60377, ChEBI:CHEBI:78436;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41761;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CMP-N-acetyl-beta-neuraminate + ganglioside GD3 (d18:1(4E)) =
CC CMP + ganglioside GT3 (d18:1(4E)) + H(+); Xref=Rhea:RHEA:41764,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57812, ChEBI:CHEBI:60377,
CC ChEBI:CHEBI:78436, ChEBI:CHEBI:78438;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41765;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CMP-N-acetyl-beta-neuraminate + ganglioside GD1a (d18:1(4E)) =
CC CMP + ganglioside GT1a (d18:1(4E)) + H(+); Xref=Rhea:RHEA:41768,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57812, ChEBI:CHEBI:60377,
CC ChEBI:CHEBI:78445, ChEBI:CHEBI:78447;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41769;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CMP-N-acetyl-beta-neuraminate + ganglioside GT1b (d18:1(4E)) =
CC CMP + ganglioside GQ1b (d18:1(4E)) + H(+); Xref=Rhea:RHEA:41772,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57812, ChEBI:CHEBI:60377,
CC ChEBI:CHEBI:78452, ChEBI:CHEBI:78455;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41773;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CMP-N-acetyl-beta-neuraminate + ganglioside GM1b (d18:1(4E)) =
CC CMP + ganglioside GD1c (d18:1(4E)) + H(+); Xref=Rhea:RHEA:47576,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57812, ChEBI:CHEBI:60377,
CC ChEBI:CHEBI:78568, ChEBI:CHEBI:87787;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47577;
CC Evidence={ECO:0000250|UniProtKB:Q92185};
CC -!- PATHWAY: Protein modification; protein glycosylation.
CC -!- PATHWAY: Lipid metabolism; sphingolipid metabolism.
CC -!- SUBCELLULAR LOCATION: Golgi apparatus membrane {ECO:0000305}; Single-
CC pass type II membrane protein {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the glycosyltransferase 29 family.
CC {ECO:0000305}.
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DR EMBL; AJ699418; CAG27880.1; -; mRNA.
DR RefSeq; NP_001027470.1; NM_001032299.1.
DR AlphaFoldDB; Q6ZXD2; -.
DR SMR; Q6ZXD2; -.
DR STRING; 9913.ENSBTAP00000000780; -.
DR CAZy; GT29; Glycosyltransferase Family 29.
DR PaxDb; Q6ZXD2; -.
DR PRIDE; Q6ZXD2; -.
DR GeneID; 282352; -.
DR KEGG; bta:282352; -.
DR CTD; 6489; -.
DR eggNOG; KOG2692; Eukaryota.
DR InParanoid; Q6ZXD2; -.
DR OrthoDB; 825014at2759; -.
DR UniPathway; UPA00222; -.
DR UniPathway; UPA00378; -.
DR Proteomes; UP000009136; Unplaced.
DR GO; GO:0000139; C:Golgi membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0003828; F:alpha-N-acetylneuraminate alpha-2,8-sialyltransferase activity; ISS:UniProtKB.
DR GO; GO:0006491; P:N-glycan processing; IBA:GO_Central.
DR GO; GO:0009311; P:oligosaccharide metabolic process; IBA:GO_Central.
DR GO; GO:0006486; P:protein glycosylation; IBA:GO_Central.
DR GO; GO:0006665; P:sphingolipid metabolic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.90.1480.20; -; 1.
DR InterPro; IPR001675; Glyco_trans_29.
DR InterPro; IPR038578; GT29-like_sf.
DR InterPro; IPR012163; Sialyl_trans.
DR Pfam; PF00777; Glyco_transf_29; 1.
DR PIRSF; PIRSF005557; Sialyl_trans; 1.
PE 2: Evidence at transcript level;
KW Disulfide bond; Glycoprotein; Glycosyltransferase; Golgi apparatus;
KW Lipid biosynthesis; Lipid metabolism; Membrane; Reference proteome;
KW Signal-anchor; Sphingolipid metabolism; Transferase; Transmembrane;
KW Transmembrane helix.
FT CHAIN 1..356
FT /note="Alpha-N-acetylneuraminide alpha-2,8-
FT sialyltransferase"
FT /id="PRO_0000247930"
FT TOPO_DOM 1..29
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 30..48
FT /note="Helical; Signal-anchor for type II membrane protein"
FT /evidence="ECO:0000255"
FT TOPO_DOM 49..356
FT /note="Lumenal"
FT /evidence="ECO:0000255"
FT CARBOHYD 71
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 119
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 214
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 245
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT DISULFID 138..287
FT /evidence="ECO:0000250"
SQ SEQUENCE 356 AA; 40452 MW; A6B2DE0A9C36076F CRC64;
MSPCGRARRH TSRGAMAVLA WKFPRTRLPV GASALCVVVL CWLYVFPVYR LPDEKEIVQG
VLQQGTAWRR NRTAAGIFRK QMEDCCDPAH LFAMTKMNAP MGKSLWYDGE FLYSFTIDNS
TYSLFPQATP FQLPLKKCAV VGNGGILKKS GCGRQIDEAD FVMRCNLPPL SSEYTKDVGS
KSHLVTANPS IIRQRFQNLL WSRKTFVDHM KVYNHSYIYM PAFSMKTGTE PSLRVYYTLS
DVGANQTVLF ANPNFLRSIG KFWKSRGIHA KRLSTGLFLV SAALGLCEEV AIYGFWPFSV
NMHEQPISHH YYDNVLPFSG FHAMPEEFLQ LWYLHKIGAL RMQLDPCEDN SLQPTS
